solve by factorization method 2m(m-24)=50
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2m ( m - 24 ) = 50
2m² - 48m - 50 = 0
2m² + 2m - 50m - 50 = 0
2m ( m + 1 ) -50 ( m + 1 ) = 0
( m + 1 ) ( 2m - 50 ) = 0
m = -1 , 50/2
m = -1 , 25 ➡ Answer
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